In 2014, John Wright, the Penn State astronomer was fascinated by large structures that advanced civilisations could build to harvest energy. He suggested looking for a Dyson sphere around Tabby’s star. This is why it’s also called the ‘alien megastructure’ star.

Tabby’s Star (also known as Boyajian’s Star and WTF Star, and designated KIC 8462852 in the Kepler Input Catalog) is an F-type main-sequence star in the constellation Cygnus approximately 1,470 light-years (450 parsecs) from Earth

Why it is called tabby star

The names “Tabby’s Star” and “Boyajian’s Star” refer to American astronomer Tabetha S. Boyajian, who was the lead author of the scientific paper that announced the discovery of the star’s irregular light fluctuations in 2015.

Is tabby star a variable star

Tabby’s Star stands out as an extraordinary celestial object with its irregular and enigmatic dimming behavior. Comparing its dimming behavior to other known variable stars reveals its unique nature and challenges our current understanding of stellar variability.

NASA’s Kepler Space Telescope alone was responsible for finding over 2,000. It did so by watching the stars in a patch of the sky for weeks, months or even years at a time. When a planet that goes around one of these stars crosses against the face of its star, it casts a small but definite shadow in the starlight. These shadows are recorded and can be used to calculate the size of the planet. The larger the planet, the more light it blocks.

unusual light fluctuations of Tabby’s Star, including up to a 22% dimming in brightness, were discovered by citizen scientists as part of the Planet Hunters project. The discovery was made from data collected by the Kepler space telescope, which observed changes in the brightness of distant stars to detect exoplanets.

Tabby’s Star was observed as early as the year 1890. The star was cataloged in the Tycho, 2MASS, UCAC4, and WISE astronomical catalogs (published in 1997, 2003, 2009, and 2012, respectively). The main source of information about the luminosity fluctuations of Tabby’s Star is the Kepler space telescope

Why is tabby star dimming

a new paper published in the Monthly Notices of the Royal Astronomical Society, astrophysicists Brian Metzger, Miguel Martinez and Nicholas Stone propose that the long-term dimming is the result of a disk of debris — torn from a melting exomoon — that is accumulating and orbiting the star, blocking its light

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